Effect of 6 kinds of spray adjuvant on surface tension and contact angle of 3 kinds of pesticides

doi:10.3969/j.issn.1004-1524.2020.10.11

›› 2020, Vol. 32 ›› Issue (10): 1823-1833.DOI: 10.3969/j.issn.1004-1524.2020.10.11

• Plant Protection • Previous Articles Next Articles

Effect of 6 kinds of spray adjuvant on surface tension and contact angle of 3 kinds of pesticides

JING Liangliang, CHAI Junfa, GAO Qiang, CAO Shuang, HONG Bo, JIA Yanxia^*

College of Agronomy, Ningxia University, Yinchuan 750021, China

Received:2020-04-11 Online:2020-10-25 Published:2020-11-16

Abstract

Abstract: In order to reduce pesticide application and increase efficiency, 6 kinds of spary adjuvant (Qiangliyuan, Roushuitong, Organosilicone, Apudun, Huainongte, Beichuang), and 3 kinds of pesticides (70% imidacloprid WG, 5% abamectin EC, 1.3% matrine AS) were mixed respectively. The changes of the surface tension and contact angle of these mixtures were measured, and the relationship between the surface tension and the contact angle of these mixtures was analyzed. It was shown that addition of 6 kinds of spray adjuvant could reduce the surface tension under different concentrations. The reduction effect on surface tension of the 3 kinds of pesticides was the highest by adding Organosilicone, Qiangliyuan and Huainongte, which was followed by Roushuitong and Apudun, and the worst effect was found by adding Beichuang. For the reduction effect on the contact angle of the 3 kinds of pesticides, it was the highest by adding Organosilicone, Roushuitong, Qiangliyuan and Huainongte, which was followed by Apudun, and the worst effect was found by adding Beichuang. The relationship between the surface tension and the contact angle of the 3 kinds of pesticides was analyzed. The regression results showed that there was a significant (P<0.05) negative correlation between the surface tension and the cosine value of the contact angle. The rational application of spary adjuvant could benefit the utilization of pesticides. The present results could provide data support for field application and further research on adjuvant.

Key words: adjuvant, imidacloprid, abamectin, matrine, surface tension, contact angle

CLC Number:

S482.92

JING Liangliang, CHAI Junfa, GAO Qiang, CAO Shuang, HONG Bo, JIA Yanxia. Effect of 6 kinds of spray adjuvant on surface tension and contact angle of 3 kinds of pesticides[J]. , 2020, 32(10): 1823-1833.

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Effect of 6 kinds of spray adjuvant on surface tension and contact angle of 3 kinds of pesticides

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